U.S. patent application number 17/381740 was filed with the patent office on 2021-12-23 for display panel and display device.
This patent application is currently assigned to Xiamen Tianma Micro-Electronics Co., Ltd.. The applicant listed for this patent is Xiamen Tianma Micro-Electronics Co., Ltd.. Invention is credited to Junjun Gan, Fan Guo, Guochang Lai, Huangyao Wu, Shumao Wu, Mengzi Zhang, Xiufeng Zhou.
Application Number | 20210398466 17/381740 |
Document ID | / |
Family ID | 1000005728396 |
Filed Date | 2021-12-23 |
United States Patent
Application |
20210398466 |
Kind Code |
A1 |
Zhang; Mengzi ; et
al. |
December 23, 2021 |
DISPLAY PANEL AND DISPLAY DEVICE
Abstract
Provided are a display panel and a display device. The display
panel includes a display area and a non-display area surrounding
the display area, the display area includes a first rectangular
area and a first special-shaped area disposed adjacent to the first
rectangular area, and the non-display area includes a second
rectangular area adjacent to the first rectangular area and a
second special-shaped area adjacent to the first special-shaped
area. The display area includes pixel units arranged in an array,
and a plurality of shift registers are disposed in the second
rectangular area and the second special-shaped area, where each of
the plurality of shift registers is connected to a row of pixel
units. The second special-shaped area includes a laser cutting
affected area, where none of the plurality of shift registers is
disposed in at least part of the laser cutting affected area.
Inventors: |
Zhang; Mengzi; (Xiamen,
CN) ; Guo; Fan; (Xiamen, CN) ; Gan;
Junjun; (Xiamen, CN) ; Wu; Huangyao; (Xiamen,
CN) ; Wu; Shumao; (Xiamen, CN) ; Lai;
Guochang; (Xiamen, CN) ; Zhou; Xiufeng;
(Xiamen, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Xiamen Tianma Micro-Electronics Co., Ltd. |
Xiamen |
|
CN |
|
|
Assignee: |
Xiamen Tianma Micro-Electronics
Co., Ltd.
Xiamen
CN
|
Family ID: |
1000005728396 |
Appl. No.: |
17/381740 |
Filed: |
July 21, 2021 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
16589644 |
Oct 1, 2019 |
11100832 |
|
|
17381740 |
|
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G09G 3/14 20130101; G09G
2310/0286 20130101 |
International
Class: |
G09G 3/14 20060101
G09G003/14 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 26, 2018 |
CN |
201811258683.5 |
Claims
1. A display panel, comprising: a display area and a non-display
area surrounding the display area, wherein the display area
comprises a first rectangular area and a first special-shaped area
disposed adjacent to the first rectangular area, and the
non-display area comprises a second rectangular area adjacent to
the first rectangular area and a second special-shaped area
adjacent to the first special-shaped area; wherein the display area
comprises pixel units arranged in an array, and a plurality of
shift registers are configured both in the second rectangular area
and the second special-shaped area, wherein each of the plurality
of shift registers is connected to a row of pixel units; and
wherein the second special-shaped area comprises a laser cutting
affected area, the laser cutting affected area comprises a laser
entry affected area and a laser exit affected area, and the
plurality of shift registers are not configured in at least part of
the laser entry affected area and/or the laser exit affected
area.
2. The display panel of claim 1, wherein the non-display area
comprises a special-shaped profile configured corresponding to the
second special-shaped area, and at least a portion of the laser
cutting affected area overlaps with the special-shaped profile in
along a light going direction of the display panel.
3. The display panel of claim 1, further comprising: a laser entry
point and a laser exit point, wherein the laser entry point is
configured as a center of a circle of the laser entry affected
area, and laser exit point is configured as a center of a circle of
the laser exit affected area.
4. The display panel of claim 3, wherein R denotes a radius of the
laser entry affected area, r denotes a radius of the laser exit
affected area, D denotes a distance between two points having a
maximum distance in the second special-shaped area, and
D>R+r.
5. The display panel of claim 1, wherein a width of the laser entry
affected area and/or the laser exit affected area in which the
plurality of shift registers are not configured in a column
direction along the array is greater than a width of one of the
plurality of shift registers along the column direction.
6. The display panel of claim 1, wherein the laser entry affected
area and the laser exit affected area are disposed at two ends of
the laser cutting affected area facing to the second rectangular
area.
7. The display panel of claim 1, wherein a polycrystalline silicon
absorber layer is configured in at least part of the laser entry
affected area and/or the laser exit affected area where the
plurality of shift registers are not configured.
8. The display panel of claim 1, wherein virtual shift registers
are disposed in at least part of the laser entry affected area
and/or the laser exit affected area where the plurality of shift
registers are not configured, and the virtual shift registers are
not connected to the pixel units.
9. The display panel of claim 1, wherein the at least part of the
laser entry affected area and/or the laser exit affected area where
the plurality of shift registers are not configured comprises a
first area, a second area and a third area which are sequentially
arranged along a column direction of the array; wherein virtual
shift registers are disposed in the first area and the third area,
and the virtual shift register are not connected to the pixel
units; and a polycrystalline silicon absorber layer is disposed in
the second area.
10. The display panel of claim 7, wherein the each of the plurality
of shift registers comprises a polycrystalline silicon layer,
wherein the polycrystalline silicon layer of the each of the
plurality of shift registers and the polycrystalline silicon
absorber layer are made of a same material in a same process.
11. The display panel of claim 9, wherein the each of the plurality
of shift registers comprises a polycrystalline silicon layer,
wherein the polycrystalline silicon layer of the each of the
plurality of shift registers and the polycrystalline silicon
absorber layer are made of a same material in a same process.
12. The display panel of claim 10, wherein the polycrystalline
silicon absorber layer comprises polycrystalline silicon blocks
arranged in an array.
13. The display panel of claim 12, wherein an orthographic
projection of each of the polycrystalline silicon blocks on a plane
wherein a light outgoing plane of the display panel is located has
a circular shape.
14. The display panel of claim 8, wherein each of the plurality of
shift registers further comprises a first insulating layer, a first
metal layer, a second insulating layer and a second metal layer
which are sequentially stacked on one side of a polycrystalline
silicon layer facing away from a base substrate, wherein the first
metal layer comprises a gate, the second metal layer comprises a
source and a drain, and the source and the drain of the second
metal layer are electrically connected to a source area and a drain
area of the polycrystalline silicon layer respectively by via holes
which penetrate through the first insulating layer and the second
insulating layer; and each of the virtual shift registers comprises
the polycrystalline silicon layer, the first insulating layer, the
second insulating layer and the second metal layer which are
sequentially stacked on one side of the base substrate, wherein via
holes are comprised in neither the first insulating layer nor the
second insulating layer of the each of the virtual shift
registers.
15. The display panel of claim 9, wherein each of the plurality of
shift registers further comprises a first insulating layer, a first
metal layer, a second insulating layer and a second metal layer
which are sequentially stacked on one side of a polycrystalline
silicon layer facing away from a base substrate, wherein the first
metal layer comprises a gate, the second metal layer comprises a
source and a drain, and the source and the drain of the second
metal layer are electrically connected to a source area and a drain
area of the polycrystalline silicon layer respectively by via holes
which penetrate through the first insulating layer and the second
insulating layer; and each of the virtual shift registers comprises
the polycrystalline silicon layer, the first insulating layer, the
second insulating layer and the second metal layer which are
sequentially stacked on one side of the base substrate, wherein via
holes are comprised in neither the first insulating layer nor the
second insulating layer of the each of the virtual shift
registers.
16. The display panel of claim 8, wherein each of the plurality of
shift registers further comprises a first insulating layer, a first
metal layer, a second insulating layer and a second metal layer
which are sequentially stacked on one side of a polycrystalline
silicon layer facing away from a base substrate, wherein the first
metal layer comprises a gate, the second metal layer comprises a
source and a drain which, and the source and the drain of the
second metal layer are electrically connected to a source area and
a drain area of the polycrystalline layer respectively by via holes
which penetrate through the first insulating layer and the second
insulating layer; and each of the virtual shift registers comprises
the polycrystalline silicon layer, the first insulating layer and
the second insulating layer which are sequentially stacked on one
side of the base substrate, wherein via holes are comprised in
neither the first insulating layer nor the second insulating layer
of the each of the virtual shift registers.
17. The display panel of claim 9, wherein each of the plurality of
shift registers further comprises a first insulating layer, a first
metal layer, a second insulating layer and a second metal layer
which are sequentially stacked on one side of a polycrystalline
silicon layer facing away from a base substrate, wherein the first
metal layer comprises a gate, the second metal layer comprises a
source and a drain which, and the source and the drain of the
second metal layer are electrically connected to a source area and
a drain area of the polycrystalline layer respectively by via holes
which penetrate through the first insulating layer and the second
insulating layer; and each of the virtual shift registers comprises
the polycrystalline silicon layer, the first insulating layer and
the second insulating layer which are sequentially stacked on one
side of the base substrate, wherein via holes are comprised in
neither the first insulating layer nor the second insulating layer
of the each of the virtual shift registers
18. The display panel of claim 1, wherein the first special-shaped
area comprises M rows of the pixel units configured corresponding
to the laser entry affected area and/or the laser exit affected
area, the plurality of shift registers connected to the M rows of
the pixel units are disposed in the second rectangular area and/or
in an area of the second special-shaped area in which the laser
entry affected area and the laser exit affected area are not
located.
19. A display device, comprising a display panel, wherein the
display panel comprises: a display area and a non-display area
surrounding the display area, wherein the display area comprises a
first rectangular area and a first special-shaped area disposed
adjacent to the first rectangular area, and the non-display area
comprises a second rectangular area adjacent to the first
rectangular area and a second special-shaped area adjacent to the
first special-shaped area; wherein the display area comprises pixel
units arranged in an array, and a plurality of shift registers are
configured both in the second rectangular area and the second
special-shaped area, wherein each of the plurality of shift
registers is connected to a row of pixel units; and wherein the
second special-shaped area comprises a laser cutting affected area,
the laser cutting affected area comprises a laser entry affected
area and a laser exit affected area, and the plurality of shift
registers are not configured in at least part of the laser entry
affected area and/or the laser exit affected area.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of and claims benefit of
priority to U.S. non-Provisional application Ser. No. 16/589,644
titled "DISPLAY PANEL AND DISPLAY DEVICE" and filed on Oct. 1,
2019, which claims priority to Chinese patent application No.
201811258683.5 filed on Oct. 26, 2018, the disclosure of which is
incorporated herein by reference in its entirety.
TECHNICAL FIELD
[0002] The present disclosure relates to display technologies, and
in particular relates to a display panel and a display device.
BACKGROUND
[0003] With the development of electronic technologies, a display
device, as one window for the interactions between users and
electronic devices, has attracted much attention. In a related art,
the core component of the display device is a display panel, and
the display panel includes a display area and a non-display area
surrounding the display area. The display area is generally a
regular rectangle with a plurality of parallel scanning lines. In
the extension direction of the plurality of scanning lines, a
scanning drive circuit including cascaded shift registers may be
disposed on each side of the display area in the non-display area.
Each shift register is electrically connected to one scanning line
and configured to supply a scanning drive signal to the scanning
line.
[0004] Due to diverse user requirements, the display device may be
configured in various shapes, for example, circular, oval, or
irregular shapes, and the display panel is also designed in the
corresponding shape to increase the proportion of the display
screen. Generally, laser cutting may be used to machine regular
rectangles into irregular patterns. However, a certain range of
laser cutting affected area will emerge during the laser cutting.
In the laser cutting affected area, the performance of the shift
registers may be affected so that the display panel performs an
abnormal display or has a reliability problem.
SUMMARY
[0005] The present disclosure provides a display panel and a
display device to reduce influence of laser cutting on performance
of shift registers, thereby facilitating a normal display of the
display panel and improving reliability of the display panel.
[0006] In a first aspect, an embodiment of the present disclosure
provides a display panel. The display panel includes a display area
and a non-display area surrounding the display area. The display
area includes a first rectangular area and a first special-shaped
area disposed adjacent to the first rectangular area. The
non-display area includes a second rectangular area adjacent to the
first rectangular area and a second special-shaped area adjacent to
the first special-shaped area.
[0007] The display area includes pixel units arranged in an array,
and a plurality of shift registers are disposed in the second
rectangular area and the second special-shaped area, where each of
the plurality of shift registers is connected to a row of pixel
units.
[0008] The second special-shaped area includes a laser cutting
affected area, where the plurality of shift registers are not
disposed in at least part of the laser cutting affected area.
[0009] In a second aspect, an embodiment of the present disclosure
further provides a display device. The display device includes any
display panel described in the first aspect.
[0010] The display panel provided by the embodiments of the present
disclosure includes the display area and the non-display area
surrounding the display area. The display area includes the first
rectangular area and the first special-shaped area disposed
adjacent to the first rectangular area. The non-display area
includes the second rectangular area adjacent to the first
rectangular area and the second special-shaped area adjacent to the
first special-shaped area. The display area includes the pixel
units arranged in the array, and the plurality of shift registers
are disposed in the second rectangular area and the second
special-shaped area, where each of the plurality of shift registers
is connected to the row of pixel units. The second special-shaped
area includes the laser cutting affected area, and the plurality of
shift registers are not disposed in at least part of the laser
cutting affected area so that the influence of laser cutting in the
laser cutting affected area on the performance of the shift
registers can be avoided, thereby facilitating the normal display
of the display panel and ensuring the reliability of the display
panel.
BRIEF DESCRIPTION OF DRAWINGS
[0011] FIG. 1 is a structural diagram of a display panel according
to an embodiment of the present disclosure;
[0012] FIG. 2 is a structural diagram of an R/C corner area of the
display panel shown in FIG. 1;
[0013] FIG. 3 is a structural diagram showing a notch area of the
display panel shown in FIG. 1;
[0014] FIG. 4 is a structural diagram of another display panel
according to an embodiment of the present disclosure;
[0015] FIG. 5 is a structural diagram of another display panel
according to an embodiment of the present disclosure;
[0016] FIG. 6 is a structural diagram of another display panel
according to an embodiment of the present disclosure;
[0017] FIG. 7 is a cross sectional view taken along a line A1-A2
shown in FIG. 6;
[0018] FIG. 8 is a structural diagram of a polycrystalline silicon
absorber layer of a display panel according to an embodiment of the
present disclosure;
[0019] FIG. 9 is a cross sectional view of another array substrate
according to an embodiment of the present disclosure; and
[0020] FIG. 10 is a structural diagram of a display device
according to an embodiment of the present disclosure.
DETAILED DESCRIPTION
[0021] Hereinafter the present disclosure will be further described
in detail in conjunction with the drawings and embodiments. It is
to be understood that the specific embodiments set forth below are
intended to illustrate and not to limit the present disclosure.
Additionally, it is to be noted that, for ease of description, only
part, not all, of the structures related to the present disclosure
are illustrated in the drawings.
[0022] FIG. 1 is a structural diagram of a display panel according
to an embodiment of the present disclosure. FIG. 2 is a structural
diagram of an R/C corner area of the display panel shown in FIG. 1.
FIG. 3 is a structural diagram of a notch area of the display panel
shown in
[0023] FIG. 1. Referring to FIG. 1 to FIG. 3, a display panel 10
includes a display area 11 and a non-display area 12 surrounding
the display area 11. The display area 11 includes a first
rectangular area 111 and a first special-shaped area 112 disposed
adjacent to the rectangular area 111. The non-display area 12
includes a second rectangular area 121 adjacent to the first
rectangular area 111 and a second special-shaped area 122 adjacent
to the first special-shaped area 112. The display area 11 includes
pixel units arranged in an array, and a plurality of shift
registers 123 are disposed in the second rectangular area 121 and
the second special-shaped area 122, where each of the plurality of
shift registers 123 is connected to a row of pixel units (a pixel
row 113 is exemplarily illustrated as the row of pixel units in
FIG. 2 and FIG. 3). The second special-shaped area 122 includes a
laser cutting affected area 122L, where the plurality of shift
registers 123 are not disposed in at least part of the laser
cutting affected area 122L.
[0024] The display panel 10 may be a light-emitting diode display
panel, a liquid crystal display panel or other types of display
panels known to those skilled in the art, which is not limited in
the embodiments of the present disclosure.
[0025] The pixel units arranged in the array in the display panel
10 emit light to enable the display panel 10 to display a picture.
The pixel units may emit light of a red color, a green color, a
blue color or other colors known to those skilled in the art, which
is not limited in the embodiments of the present disclosure.
[0026] The shift register 123 may be electrically connected to the
pixel units in the pixel row 113 through scanning lines (not shown)
to drive pixel units row by row. Of course, it is to be understood
by those skilled in the art that the shift registers 123 may be
merely disposed in the non-display area 12 on a certain side of the
display area 11 of the display panel 10, may be disposed in the
non-display area 12 on opposite sides of the display area 11 of the
display panel 10, or may be disposed in other manners. A specific
connection relationship between the pixel row 113 and the shift
register 123 may be determined according to the distribution of the
shift registers 123, which is not limited in the embodiments of the
present disclosure.
[0027] A special-shaped area (including the first special-shaped
area 112 and the second special-shaped area 122) refers to an area
which is not a regular rectangle. The special-shaped area may be
formed by special shape cutting (cutting regular rectangles into
irregular profiled patterns). The special shape cutting is
generally performed in a laser cutting manner to ensure a higher
cutting accuracy and a faster cutting speed, and ensure higher
cutting efficiency.
[0028] Exemplarily, the special shape cutting mainly includes two
aspects. In one aspect, a chamfered structure is cut at four top
corners of the display panel 10 of a regular rectangle to enhance
strength of the display panel 10. The chamfered structure may
include a rounded corner (R corner) or a chamfered corner (C
corner). It is to be understood by those skilled in the art that a
radian of the R corner and an angle of the C corner may be
configured according to practical requirements of the display
panel, which is not limited in the embodiments of the present
disclosure. In the other aspect, a notch structure is cut at the
top of the display panel 10 to place a front-facing camera, a
distance sensor, a sound sensor, or other elements known to those
skilled in the art. The notch structure may include a V-shaped
groove, a U-shaped groove, or notch structures in other shapes
known to those skilled in the art, which is not limited in the
embodiments of the present disclosure.
[0029] In the related art, when the special shape cutting is
performed in the laser cutting manner, the sputtering of a laser
beam with high energy will affect the performance of
polycrystalline silicon in the shift register, thereby leading to a
failure of the shift register, an abnormal display of the display
panel, or reduced reliability of the display panel. If the energy
of the laser beam is reduced, the sputtering of the laser beam may
have less influence on the performance of the shift register, but a
laser beam with low energy has low laser cutting efficiency. In the
embodiments of the present disclosure, the plurality of shift
registers 123 are not disposed in at least part of the laser
cutting affected area 122L, so that the influence of the laser
cutting in the laser cutting affected area on the performance of
the shift register 123 can be avoided, thereby facilitating a
normal display of the display panel 10 and ensuring reliability of
the display panel 10. Meanwhile, the higher laser cutting
efficiency may be ensured when the energy of the laser beam is not
reduced.
[0030] The plurality of shift registers 123 are not disposed in at
least part of the laser cutting affected area 122L may be
understood as a downward dodge of the shift register 123.
Exemplarily, the R/C corner area of the display panel in FIG. 2 or
the notch area of the display panel in FIG. 3 is described as an
example. No shift registers 123 are disposed at the corresponding
position of the laser cutting affected area 122L, and the shift
register 123 electrically connected to the pixel row 113
corresponding to the position dodges downwards from the laser
cutting affected area 122L, that is, the shift register 123 is
disposed at other positions adjacent to the laser cutting affected
area 122L of the non-display area 12 (including the second
rectangular area 121 and the second special-shaped area 122). It
may also be understood as an absence of the shift register 123 in a
blank area between two adjacent shift registers 123, which
corresponds to the laser cutting affected area 122L. In this way,
even if laser sputtering affects the blank area, the laser
sputtering has no influence on the performance of the shift
register 123 because of the absence of the shift register 123 in
the blank area, so that the influence of the laser sputtering on
the performance of the shift register 123 may be avoided, thereby
facilitating the normal display of the display panel 10 and
ensuring the reliability of the display panel 10.
[0031] Exemplarily, a width of the blank area in a column direction
may be at least greater than a width of one shift register 123 in
the column direction.
[0032] It should be noted that FIG. 2 and FIG. 3 only exemplarily
illustrate the downward dodge of the shift register 123, which is
not to limit the display panel 10 in the embodiments of the present
disclosure. In other embodiments, an upward dodge of the shift
register 123 may also be provided according to the practical
requirements of the display panel 10, or other dodge manners known
to those skilled in the art are employed, which is not limited in
the embodiments of the present disclosure.
[0033] Optionally, referring to FIG. 2 and FIG. 3, the laser
cutting affected area 122L includes a laser entry affected area and
a laser exit affected area.
[0034] A special-shaped profile of the special-shaped area may be
formed in the laser cutting manner. An affected area in a laser
cutting process may include the laser entry affected area, a laser
cutting process affected area, and the laser exit affected area.
The laser entry affected area may be understood as an arcuate area
with a certain radius and with a laser entry point 122L0 as a
center. The laser exit affected area may be understood as an
arcuate area with a certain radius and with a laser exit point
(which is not shown in the figures and may be understood with
reference to the laser entry point) as a center. The laser cutting
process affected area is an area corresponding to the
special-shaped profile between the laser entry affected area and
the laser exit affected area.
[0035] The laser entry affected area and the laser exit affected
area are greatly affected by the laser sputtering, while the laser
cutting process affected area is less affected by the laser
sputtering. Therefore, the absence of the shift register 123 in the
laser entry affected area and the laser exit affected area may
avoid the influence of the laser sputtering on the performance of
the shift register 123, thereby facilitating the normal display of
the display panel 10 and ensuring the reliability of the display
panel 10. It should be noted that only the laser entry affected
area and the laser exit affected area which are semi-circular areas
with a certain radius are exemplarily illustrated above, which is
not to limit the embodiments of the present disclosure. It is to be
understood by those skilled in the art that the shapes of the laser
entry affected area and the laser exit affected area are also
related to a property of a film layer being cut in the display
panel and a cutting process. The shapes of the laser entry affected
area and the laser exit affected area are not limited in the
embodiments of the present disclosure.
[0036] Optionally, FIG. 4 is a structural diagram of another
display panel according to an embodiment of the present disclosure.
Referring to FIG. 4, a polycrystalline silicon absorber layer 1241
is disposed in the at least part of the laser cutting affected area
122L in which the plurality of shift registers 123 are not
disposed.
[0037] The polycrystalline silicon absorber layer 1241 may be
configured to absorb laser sputtering energy. Such a configuration
may reduce the influence of the laser sputtering energy on the
performance of the shift registers 123 adjacent to the laser
cutting affected area 122L, thereby facilitating the normal display
of the display panel 10 and ensuring the reliability of the display
panel 10. It should be noted that FIG. 4 merely exemplarily
illustrates a film position of the polycrystalline absorber layer
1241 on a plane where the display panel 10 is located, and a
specific internal structure of the polycrystalline absorber layer
1241 is described in detail below.
[0038] Optionally, FIG. 5 is a structural diagram of yet another
display panel according to an embodiment of the present disclosure.
Referring to FIG. 5, virtual shift registers 1242 are disposed in
the at least part of the laser cutting affected area 122L in which
the plurality of shift registers 123 are not disposed, where the
virtual shift registers 1242 are not connected to the pixel
units.
[0039] Since the virtual shift registers 1242 are not connected to
the pixel units, even if the performance of the virtual shift
register 1242 is affected by the laser sputtering, the display
panel 10 may perform the normal display and has unaffected
reliability because the performance of the virtual shift register
1242 does not affect light emission of the pixel units.
[0040] In addition, a film layer structure of the virtual shift
register 1242 is similar to a film layer structure of the shift
register 123 (detailed below). In this way, a thickness difference
between the laser cutting affected area 122L and other areas of the
non-display area 12 may be reduced so that an overall film layer of
the display panel 10 has better flatness. On the other hand, the
same film layer in the virtual shift register 1242 and the shift
register 123 may be made in the same process. Moreover, for a mask
exposure process, a pattern density on a mask plate used in the
process may remain consistent at each position of the mask plate by
disposing the virtual shift register 1242, thereby ensuring that a
film layer at an exposure edge has consistent characteristic
dimension and avoiding the problem of poor uniformity of the film
layer at the exposure edge.
[0041] It should be noted that FIG. 5 merely exemplarily
illustrates three virtual shift registers 1242, which is not to
limit the display panel 10 in the embodiments of the present
disclosure. In other embodiments, a number of virtual shift
registers 1242 may be set according to the practical requirements
of the display panel 10, which is not limited in the embodiments of
the present disclosure.
[0042] Optionally, FIG. 6 is a structural diagram of another
display panel according to an embodiment of the present disclosure.
Referring to FIG. 6, the laser cutting affected area 122L in which
the plurality of shift registers 123 are not disposed includes a
first area, a second area and a third area which are sequentially
arranged along a column direction Y of the array. A virtual shift
register 1242 is separately disposed in the first area and the
third area, where the virtual shift register 1242 is not connected
to the pixel units, and a polycrystalline silicon absorber layer
1241 is disposed in the second area.
[0043] The polycrystalline silicon absorber layer 1241 may be
configured to absorb part of the laser sputtering energy. The
virtual shift register 1242 may alleviate the problem of poor
uniformity of the film layer at the exposure edge, thereby ensuring
that the performance of the shift registers 123 abutting against
the virtual shift registers 1242 is consistent with the performance
of the shift registers 123 disposed at other positions, thereby
facilitating the normal display of the display panel 10 and
ensuring the reliability of the display panel 10.
[0044] It should be noted that FIG. 6 merely exemplarily
illustrates one virtual shift register 1242 separately disposed in
the first area and the third area, which is not to limit the
display panel 10 in the embodiments of the present disclosure. In
other embodiments, a number of virtual shift registers 1242 in the
first area and the third area may be set according to the practical
requirements of the display panel 10, and the first area and the
third area may have a same number of virtual shift registers 1242
or different numbers of virtual shift registers 1242, which is not
limited in the embodiments of the present disclosure.
[0045] Optionally, FIG. 7 is a cross sectional view taken along a
line A1-A2 shown in FIG. 6. Referring to FIG. 7, the shift register
123 includes a polycrystalline silicon layer 22, where the
polycrystalline silicon layer 22 of the shift register and the
polycrystalline absorber layer 1241 are made of the same material
in the same process.
[0046] In such a configuration, processes may not be increased and
new materials may not be introduced.
[0047] Optionally, FIG. 8 is a structural diagram of a
polycrystalline silicon absorber layer of a display panel according
to an embodiment of the present disclosure. Referring to FIG. 8,
the polycrystalline silicon absorber layer 1241 includes
polycrystalline silicon blocks 12410 arranged in an array.
[0048] In such a configuration, while the laser sputtering energy
is absorbed by the polycrystalline silicon absorber layer 1241, the
accumulation of static electricity on the polycrystalline silicon
absorber layer 1241 is avoided, thereby avoiding the influence of
electrostatic discharge on the normal display and reliability of
the display panel 10.
[0049] It should be noted that FIG. 8 merely exemplarily
illustrates polycrystalline silicon blocks 12410 in eight columns
and five rows, which is not to limit the polycrystalline absorber
layer 1241 of the display panel 10 in the embodiments of the
present disclosure. In other embodiments, a number of
polycrystalline silicon blocks 12410 and an array arrangement of
the polycrystalline silicon blocks 12410 may be set according to
the practical requirements of the display panel 10, which is not
limited in the embodiments of the present disclosure.
[0050] Optionally, with continued reference to FIG. 8, the
polycrystalline silicon block 12410 is circular in shape in a plane
parallel to the plane where the display panel 10 is located.
[0051] Such a configuration may smooth profile edges of the
polycrystalline silicon blocks 12410 and avoid the influence of
point discharge on display performance of the display panel 10,
thereby facilitating the normal display of the display panel 10 and
ensuring the reliability of the display panel 10.
[0052] Optionally, still referring to FIG. 7, the shift register
123 further includes a first insulating layer 23, a first metal
layer 24, a second insulating layer 25 and a second metal layer 26
which are sequentially stacked on one side of the polycrystalline
silicon layer 22 facing away from a base substrate 20. The first
metal layer 24 includes a gate, the second metal layer 26 includes
a source and a drain, and the source and the drain of the second
metal layer 26 are electrically connected to a source area and a
drain area of the polycrystalline silicon layer 22 respectively by
via holes which penetrate through the first insulating layer 23 and
the second insulating layer 25. The virtual shift register 1242
includes the polycrystalline silicon layer 22, the first insulating
layer 23, the second insulating layer 25 and the second metal layer
26 which are sequentially stacked on one side of the base substrate
20, where via holes are included in neither the first insulating
layer 23 nor the second insulating layer 25 of the virtual shift
register 1242.
[0053] The virtual shift register 1242 does not include the first
metal layer 24, so that charge accumulation on the first metal
layer 24 may be prevented, thereby avoiding the influence of
electrostatic discharge of the first metal layer 24 on the normal
display and reliability of the display panel 10.
[0054] Meanwhile, the via hole is included in neither the first
insulating layer 23 nor the second insulating layer 25 of the
virtual shift register 1242, so that electrical connection lines
are not formed in the first insulating layer 23 and the second
insulating layer 25 at the corresponding position of the virtual
shift register 1242, thereby avoiding the charge accumulation due
to the electrical connection lines and avoid the influence of
electrostatic discharge when the electrical connection lines exist
on a display function and the reliability of the display panel
10.
[0055] In addition, a difference between the film layer structure
of the virtual shift register 1242 and the film layer structure of
the shift register 123 shown in FIG. 7 lies in that the virtual
shift register 1242 does not include the first metal layer 24.
Therefore, a thickness of a film layer of the virtual shift
register 1242 approximates that of a film layer of the shift
register 123, so that the display panel 10 has better global
flatness.
[0056] Optionally, FIG. 9 is a cross sectional structural view of
another array substrate according to an embodiment of the present
disclosure. Referring to FIG. 9, the shift register 123 further
includes the first insulating layer 23, the first metal layer 24,
the second insulating layer 25 and the second metal layer 26 which
are sequentially stacked on one side of the polycrystalline silicon
layer 22 facing away from the base substrate 20. The first metal
layer 24 includes the gate, the second metal layer 26 includes the
source and the drain, the source and the drain of the second metal
layer 26 are electrically connected to the source area and the
drain area of the polycrystalline silicon layer 22 respectively by
via holes which penetrate through the first insulating layer 23 and
the second insulating layer 25. The virtual shift register 1242
includes the polycrystalline silicon layer 22, the first insulating
layer 23 and the second insulating layer 25 which are sequentially
stacked on one side of the base substrate 20, where the via holes
are included in neither the first insulating layer 23 nor the
second insulating layer 25 of the virtual shift register 1242.
[0057] The virtual shift register 1242 includes neither the first
metal layer 24 nor the second metal layer 26, so that charge
accumulation on the first metal layer 24 and the second metal layer
26 may be prevented, thereby avoiding the influence of
electrostatic discharge of the first metal layer 24 and the second
metal layer 26 on the display function and reliability of the
display panel 10.
[0058] It should be noted that the polycrystalline silicon layer 22
in the virtual shift register 1242 and the polycrystalline silicon
absorber layer 1241 shown in FIG. 9 have different planar shapes.
Specifically, in the mask exposure process, the polycrystalline
silicon layer 22 in the virtual shift register 1242 and the
polycrystalline silicon layer 22 in the shift register 123 may be
exposed using the same mask pattern. Thus, in the mask exposure
process, a mask pattern density at a position adjacent to the shift
register 123 is the same as a mask pattern density at a position
corresponding to the shift register 123, so that a film layer at an
exposure edge of the polycrystalline silicon layer 22 of the shift
register 123 has the same uniformity as a film layer at an exposure
edge of the polycrystalline silicon layer 22 of the shift register
123 at another position, thereby ensuring that the performance of
the shift register 123 is consistent with the performance of the
shift register 123 at another position and facilitating the normal
display of the display panel 10.
[0059] Exemplarily, with continued reference to FIG. 7 or FIG. 9,
the shift register 123 and the virtual shift register 1242 may
further include a first passivation layer 21, a planarization layer
27, and a second passivation layer 28. The first passivation layer
21 is disposed on one side of the polycrystalline silicon layer 22
(the polycrystalline silicon absorber layer 1241) close to the base
substrate 20. The planarization layer 27 is disposed on one side of
the second metal layer 26 facing away from the base substrate 20.
The second passivation layer 28 is disposed on one side of the
planarization layer 27 facing away from the base substrate 20. The
first passivation layer 21, the planarization layer 27, and the
second passivation layer 28 may be made of materials known to those
skilled in the art and in manners known to those skilled in the
art, which are not repeated and limited in the embodiments of the
present disclosure.
[0060] An embodiment of the present disclosure further provides a
display device. Exemplarily, FIG. 10 is a structural diagram of a
display device according to an embodiment of the present
disclosure. Referring to FIG. 10, a display device 30 includes the
display panel 10 according to the embodiments described above.
[0061] The display device 30 according to the embodiment of the
present disclosure includes the display panel 10 in the embodiments
described above. Therefore, the display device 30 according to the
embodiment of the present disclosure also has the beneficial
effects described in the above embodiments, and details are not
repeated herein. Exemplarily, the display device 30 may include a
mobile phone, a computer, a smart wearable device and the like,
which is not limited in the embodiments of the present
disclosure.
[0062] It is to be noted that the above are merely preferred
embodiments of the present disclosure and the technical principles
used therein. It will be understood by those skilled in the art
that the present disclosure is not limited to the specific
embodiments described herein. Those skilled in the art can make
various apparent modifications, adaptations, combinations and
substitutions without departing from the scope of the present
disclosure. Therefore, while the present disclosure has been
described in detail through the above-mentioned embodiments, the
present disclosure is not limited to the above-mentioned
embodiments and may include more other equivalent embodiments
without departing from the concept of the present disclosure. The
scope of the present disclosure is determined by the scope of the
appended claims.
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